<p> Rodamiento de Rodillos Esféricos 21307 35x80x21mm para Caja de Cambios Alta Velocidad en Stock Entrega Rápida
MODEL: 21307100% Genuine · Traceable
Ensure your gearbox operates at peak efficiency with the NTN Spherical Roller Bearing 21307, engineered for high-speed performance and reliable power transmission. This 35x80x21mm precision component delivers long life and low noise, making it ideal for automotive and industrial gearbox applications where downtime is costly.ISO 9001-certified quality with full traceability documentation for seamless complianceIn-stock availability ensures fast delivery to keep your production schedule on trackSpherical roller design accommodates misalignment, reducing wear and extending equipment lifespanBacked by Dunyu Bearings' 10+ years of technical expertise, this genuine NTN bearing comes with the support you need to optimize installation and minimize maintenance risks. Customizable options available to match your specific operational requirements.
Compressive residual stress on raceway surface for crack resistance
40% L10 life improvement vs. industry standard steel
SEALING
Multi-Lip NBR / FKM Seals
Choice of contact (2RS), non-contact (2Z) and metal shielded (ZZ) options. Designed for IP65 dust ingress protection and grease retention.
NBR rated -40°C ~ +120°C / FKM rated up to +200°C
Garter spring tension calibrated for low torque & long sealing life
Customizable food-grade FDA compliant variants available
PRECISION
P0 to P5 Tolerance Class
Precision grades from standard P0 up to P5 (ISO Class 5) for high-speed spindle applications. Inspected on Mahr / Talyrond CMM equipment.
Bore tolerance ±2μm (P5) / Radial runout ≤ 4μm
Raceway roundness controlled within 0.8μm
Vibration class Z2/Z3/Z4 for low-noise applications
CLEARANCE
CN / C3 / C4 Internal Clearance
Internal radial clearance optimized per application -- CN for general use, C3 for thermal expansion, C4 for high-temperature environments.
Optimized load distribution under interference fits
Thermal expansion accommodation up to ΔT 80°C
Custom clearance ranges available for OEM specifications
SECTION 08 / TRUST & TRACEABILITY
100% Genuine NTN. Traceable. Warranted.
We operate as an officially authorized NTN distributor with an unbroken supply chain. Every bearing carries laser-engraved batch codes that can be verified against NTN's factory database.
Authorized Distributor
Direct sourcing from NTN factories with original brand authorization certificate.
Laser Batch Code
Every bearing engraved with traceable batch ID. Verifiable via NTN factory MES system.
Full Documentation
Mill test certificates, COO, COC, packing list -- all export documents provided.
12-Month Warranty
Standard 12-month quality warranty. Free replacement for verified manufacturing defects.
Q.01How can I verify the authenticity of NTN bearings I receive?
Every NTN bearing has laser-engraved batch codes on the inner ring. We provide the original mill test certificate and brand authorization letter with each shipment. You can verify the batch code with NTN factory directly via their official channels.
Q.02What is the typical lead time and minimum order quantity?
In-stock items ship within 5-7 working days. MOQ starts from 1 piece for samples. Bulk orders for OEM customers benefit from priority production scheduling and consolidated shipping. Custom non-standard bearings typically take 30-45 days.
Q.03Do you offer OEM customization (clearance, sealing, precision)?
Yes. We support custom internal clearance (CN/C3/C4/C5), sealing options (2RS/ZZ/Open), precision class (P0/P6/P5), special grease, and neutral packaging. Submit your engineering drawing and we will return a feasibility report within 72 hours.
Q.04What documentation is provided for international shipping?
Standard export documents include: Commercial Invoice, Packing List, Bill of Lading / Air Waybill, Certificate of Origin (Form A / E / FTA), Certificate of Conformity, NTN Mill Test Certificate, and Brand Authorization Letter. Customs HS code and country-specific requirements are pre-checked.
Q.05What is your warranty and return policy?
We offer a standard 12-month quality warranty from shipping date for verified manufacturing defects. Defective products are replaced free of charge. Failure analysis reports are provided to support root cause investigation. Wear due to misapplication or improper installation is excluded.
Q.06Can you ship under DDP terms to my country?
Yes. We support EXW, FOB, CIF, CFR, and DDP terms. Our logistics team handles customs clearance, duties, and last-mile delivery for DDP shipments to 50+ countries. For sensitive markets, we recommend DDP to avoid customs delays.
PRODUCT DESCRIPTION
Detailed Product Information
Ensure your gearbox operates at peak efficiency with the NTN Spherical Roller Bearing 21307, engineered for high-speed performance and reliable power transmission. This 35x80x21mm precision component delivers long life and low noise, making it ideal for automotive and industrial gearbox applications where downtime is costly.
ISO 9001-certified quality with full traceability documentation for seamless compliance
In-stock availability ensures fast delivery to keep your production schedule on track
Backed by Dunyu Bearings’ 10+ years of technical expertise, this genuine NTN bearing comes with the support you need to optimize installation and minimize maintenance risks. Customizable options available to match your specific operational requirements.
Detenga el tiempo de inactividad de la caja de cambios con los rodamientos de rodillos esféricos genuinos
21307
Los fabricantes OEM conocen el costo de la falla inesperada de un engranaje: horas de producción perdidas, equipos de mantenimiento en apuros y plazos de entrega incumplidos. Los rodamientos del mercado gris a menudo fallan prematuramente debido a materiales de calidad inferior, mientras que los distribuidores de múltiples niveles alargan los plazos de entrega en un 30-50%, dejando su línea de producción inactiva cuando más necesita las piezas.
Rodamientos genuinos
21307 en stock para envío inmediato
Como distribuidor oficial de
, eliminamos estos puntos de dolor con nuestro sistema de inventario en tiempo real WMS. El rodamiento esférico 21307 (35x80x21mm) está disponible ahora—sin esperar envíos desde el extranjero o procesamiento por lotes. Diseñado para aplicaciones de cajas de engranajes de alta velocidad, este rodamiento ofrece la fiabilidad que exige su programa de producción, respaldado por nuestro proceso de inspección de calidad de tres niveles ISO 9001.
Diseñado para el rendimiento de cajas de engranajes de alta velocidad
El rodamiento esférico 21307 se destaca en entornos exigentes donde las cargas radiales y las altas velocidades de rotación son constantes. Su diseño esférico acomoda desalineaciones, reduciendo el estrés en los ejes de la caja de cambios y extendiendo la vida útil. Ya sea en transmisiones automotrices o maquinaria industrial, este rodamiento mantiene una operación estable incluso bajo condiciones de carga variable, convirtiéndolo en un componente crítico para minimizar el tiempo de inactividad no planificado.
Ventajas Técnicas Que Importan
Three key features define the NTN 21307’s performance: its 35mm bore diameter and 80mm outside diameter balance load capacity with compact gearbox integration; the 21mm width provides optimal support for high-torque applications; and the low-noise design ensures compliance with industrial sound regulations. The bearing’s long-life construction reduces replacement frequency, directly lowering your total maintenance costs. Each unit undergoes rigorous testing to meet NTN’s strict quality standards, ensuring consistent performance across every batch.
El costo oculto de los rodamientos de caja de cambios falsificados
Elegir rodamientos no autorizados para su caja de cambios puede parecer rentable inicialmente, pero los riesgos son sustanciales. Los productos falsificados a menudo carecen de un tratamiento térmico adecuado, lo que lleva a un desgaste prematuro y a una posible falla catastrófica. Una sola avería de la caja de cambios puede costar miles en tarifas de reparación y producción perdida, superando con creces los ahorros de alternativas más baratas. Nuestros rodamientos
21307 vienen con documentación de trazabilidad completa, asegurando el cumplimiento de la aduana y eliminando disputas de responsabilidad por piezas no certificadas.
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With over 10 years serving 50+ countries, we’ve built our reputation on four pillars: official NTN authorization guarantees 100% genuine products with complete traceability; our technical team provides application-specific guidance, from model selection to installation support; dedicated account managers track every order from warehouse to delivery; and flexible OEM customization meets your unique gearbox requirements. We maintain stock levels to support both emergency repairs and long-term production runs, ensuring you never face unnecessary delays.
Packaging & Shipping
Original
empaque con certificación del producto y documentación de trazabilidad
Embalaje de palets de cartón para transporte y almacenamiento seguros
Procesamiento el mismo día para pedidos en stock
Logística global puerta a puerta a través de DHL, FedEx o opciones de flete marítimo
Seguimiento en tiempo real proporcionado para todos los envíos
Cantidad mínima de pedido: 1 unidad para necesidades de emergencia
Obtenga su
21307 Rodamiento Enviado Hoy
Don’t let gearbox downtime disrupt your production schedule. The NTN 21307 Spherical Roller Bearing is in stock and ready to ship—send your order details now and get back to full operation faster. Our team will confirm availability, provide a formal quotation within 24 hours, and arrange delivery that aligns with your timeline.
Preguntas Frecuentes
Q: ¿Son estos rodamientos genuinos?
A: Sí, somos un distribuidor autorizado oficial de
. Cada rodamiento viene con documentación de trazabilidad completa y certificados de autorización de marca.
Q: ¿Cómo confirmo si el 21307 es compatible con mi caja de cambios?
A: Proporcione el modelo de su caja de cambios o los parámetros de operación (carga, velocidad, temperatura), y nuestro equipo técnico verificará la compatibilidad sin costo alguno.
P: ¿Cuál es su política de garantía?
A: All NTN bearings are covered by the manufacturer’s warranty. We replace or refund any units with manufacturing defects.
Q: ¿Cuál es la cantidad mínima de pedido?
A: Aceptamos pedidos para 1 unidad, apoyando tanto reparaciones de emergencia como requisitos de pequeñas cantidades.
P: ¿Qué tan rápido pueden enviar?
A: Los rodamientos en stock se procesan dentro de 24 horas, con tiempos de entrega que varían de 3 a 7 días hábiles dependiendo de la ubicación.
Q: How can I verify the bearing’s authenticity?
A: Each bearing includes NTN’s original packaging with anti-counterfeit labels. We also provide full traceability documents for verification.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.
Submit your inquiry below. Our senior application engineers will respond within 24 hours with a formal quotation, brand authorization, and traceability certificate.
